Netatalk: Insecure tempfile handling in etc2ps.sh
— GLSA 200410-25

The etc2ps.sh script, included in the Netatalk package, is vulnerable to
symlink attacks, potentially allowing a local user to overwrite arbitrary
files with the rights of the user running the utility.

Affected Packages

Package

net-fs/netatalk on all architectures

Affected versions

< 1.6.4-r1

Unaffected versions

>= 1.6.4-r1

Background

Netatalk is a kernel level implementation of the AppleTalk Protocol Suite,
which allows Unix hosts to act as file, print, and time servers for Apple
computers. It includes several script utilities, including etc2ps.sh.

Description

Impact

A local attacker could create symbolic links in the temporary files
directory, pointing to a valid file somewhere on the filesystem. When
etc2ps.sh is executed, this would result in the file being overwritten with
the rights of the user running the utility, which could be the root user.